Re: [PATCH] acpi: Check if @id is NULL in acpi_table_parse()
From: Rafael J. Wysocki
Date: Mon Jan 06 2014 - 06:35:33 EST
On Monday, January 06, 2014 04:43:54 PM Tang Chen wrote:
> strncmp() does not check if the params are NULL. In acpi_table_parse(),
> if @id is NULL, the kernel will panic.
>
> Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
> Acked-by: Toshi Kani <toshi.kani@xxxxxx>
Queued up for 3.14 (but please use the e-mail address from MAINTAINERS next
time). Thanks!
> ---
> drivers/acpi/tables.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index d67a1fe..5a5263b 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -293,7 +293,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
> if (acpi_disabled)
> return -ENODEV;
>
> - if (!handler)
> + if (!id || !handler)
> return -EINVAL;
>
> if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/